Why is "combine HSV" node showing different color with the same values?
Try adding a gamma node with 2.2 in between combine and bsdf nodes. I tried it and it seems to work.
The one on the right uses the other glass bsdf


I’d assume the RGB color picker is gamma corrected (to preserve the linear workflow), whereas the Combine HSV node as a - let’s say - more mathematical approach to color is not.
Add a Gamma node with a value of 1/2.2 between the RGB node and the Emission shader and you will get the same values as with the Combine HSV node.

Source: https://blenderartists.org/t/different-outputs-of-rgb-and-combine-hsv/675268